1983 Plymouth Scamp GT - Lacking in Performance

Awesome, going to do just that.

Lonewolf: The light went on about 2 weeks ago, not sure if it would tell me anything now. But that may be because I don't know how to find out error codes, it's just one light that says "engine".

I used to hit it with carb cleaner once a month or so last year when i was having problems, and it slows down quite a bit when I do that, but i stop before it sputters out.

A neighbor said we can use his pressure gauge and check the pistons pretty soon, so that's next. He also mentioned the timing belt, I can't say when it was last replaced - definitely not within the last 3 to 4 years. These are all great tips, thanks a bunch for the help